Packet.Flags and OG_SHIFTLIGHT must be of the same data type. Both should be Integer, I reckon.
                
            Option Explicit
'This can be controlled by 5 lines in the cfg.txt file :
'OutGauge Mode 0        :0-off 1-driving 2-driving+replay
'OutGauge Delay 1       :minimum delay between packets (100ths of a sec)
'OutGauge IP 0.0.0.0    :IP address to send the UDP packet
'OutGauge Port 0        :IP port
'OutGauge ID 0          :if not zero, adds an identifier to the packet
'Each update sends the following UDP packet :
Private Type OutGaugePacket
    Time(0 To 3) As Byte        'unsigned int    Time;           // time in milliseconds (to check order)
    Car(0 To 3) As Byte         'char            Car[4];         // Car name
    Flags(0 To 1) As Byte       'word            Flags;          // Combination of OG_FLAGS, see below
    Gear As Byte                'byte            Gear;           // Reverse:0, Neutral:1, First:2...
    SpareB As Byte              'byte            SpareB;
    Speed As Single             'float           Speed;          // M/S
    RPM As Single               'float           RPM;            // RPM
    Turbo As Single             'float           Turbo;          // BAR
    EngTemp As Single           'float           EngTemp;        // C
    Fuel As Single              'float           Fuel;           // 0 to 1
    OilPress As Single          'float           OilPress;       // BAR
    Spare1 As Single            'float           Spare1;
    Spare2 As Single            'float           Spare2;
    Spare3 As Single            'float           Spare3;
    Throttle As Single          'float           Throttle;       // 0 to 1
    Brake As Single             'float           Brake;          // 0 to 1
    Clutch As Single            'float           Clutch;         // 0 to 1
    Display1(0 To 15) As Byte   'char            Display1[16];   // Usually Fuel
    Display2(0 To 15) As Byte   'char            Display2[16];   // Usually Settings
    ID As Long                  'int             ID;             // (optional ID - if specified in cfg.txt)
End Type
Private Const OG_SHIFTLIGHT As Long = 1  '#define OG_SHIFTLIGHT   1
Private Const OG_FULLBEAM As Long = 2    '#define OG_FULLBEAM     2
Private Const OG_HANDBRAKE As Long = 4   '#define OG_HANDBRAKE    4
Private Const OG_PITSPEED As Long = 8    '#define OG_PITSPEED     8
Private Const OG_TC As Long = 16         '#define OG_TC           16
Private Const OG_HEADLIGHTS As Long = 32 '#define OG_HEADLIGHTS   32
Private Const OG_SIGNAL_L As Long = 64   '#define OG_SIGNAL_L     64
Private Const OG_SIGNAL_R As Long = 128  '#define OG_SIGNAL_R     128
Private Const OG_REDLINE As Long = 256   '#define OG_REDLINE      256
Private Const OG_OILWARN As Long = 512   '#define OG_OILWARN      512
Private Const OG_1 As Long = 1024        '#define OG_1            1024
Private Const OG_2 As Long = 2048        '#define OG_2            2048
Private Const OG_3 As Long = 4096        '#define OG_3            4096
Private Const OG_4 As Long = 8192        '#define OG_4            8192
Private Const OG_KM As Long = 16384      '#define OG_KM           16384
Private Const OG_BAR As Long = 32768     '#define OG_BAR          32768
Private lngTheSocket As Long
Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (pDst As Any, pSrc As Any, ByVal ByteLen As Long)
Private Sub Form_Load()
    If theSocket.Initilize("MrOutGauge") Then
        lngTheSocket = theSocket.ListenTo("UDP", 55)
        
        Print "Listening on port 55"
    Else
        Print "Could not initlize winsock!?"
    End If
End Sub
Private Sub theSocket_Received(lngSocket As Long, Data() As Byte)
    If lngSocket = lngTheSocket Then
        Dim Packet As OutGaugePacket
        Dim Display1 As String
        Dim Display2 As String
        
        CopyMemory Packet, Data(0), LenB(Packet)
        
        lblSpeed.Caption = Format(Packet.Speed * 3.6, "##0.0") 'Valor de velocidad
        lblFuel.Caption = Format(Packet.Fuel * 100, "#0.#0") & " %" 'Valor de Fuel en %
        lblRPM.Caption = Format(Packet.RPM, "####0") 'Valor de RPM
        lblTurbo.Caption = Format(Packet.Turbo, "#0.##0") & " BAR" 'Indicador de Turbo
         
        Display1 = Chr(Packet.Display1(0))
        Display1 = Display1 & Chr(Packet.Display1(1))
        Display1 = Display1 & Chr(Packet.Display1(2))
        Display1 = Display1 & Chr(Packet.Display1(3))
        Display1 = Display1 & Chr(Packet.Display1(4))
        Display1 = Display1 & Chr(Packet.Display1(5))
        Display1 = Display1 & Chr(Packet.Display1(6))
        Display1 = Display1 & Chr(Packet.Display1(7))
        Display1 = Display1 & Chr(Packet.Display1(8))
        Display1 = Display1 & Chr(Packet.Display1(9))
        Display1 = Display1 & Chr(Packet.Display1(10))
        Display1 = Display1 & Chr(Packet.Display1(11))
        Display1 = Display1 & Chr(Packet.Display1(12))
        Display1 = Display1 & Chr(Packet.Display1(13))
        Display1 = Display1 & Chr(Packet.Display1(14))
        Display1 = Display1 & Chr(Packet.Display1(15))
        lblDisplay1.Caption = Display1 ' Muestra el Display 1
        
        Display2 = Chr(Packet.Display2(0))
        Display2 = Display2 & Chr(Packet.Display2(1))
        Display2 = Display2 & Chr(Packet.Display2(2))
        Display2 = Display2 & Chr(Packet.Display2(3))
        Display2 = Display2 & Chr(Packet.Display2(4))
        Display2 = Display2 & Chr(Packet.Display2(5))
        Display2 = Display2 & Chr(Packet.Display2(6))
        Display2 = Display2 & Chr(Packet.Display2(7))
        Display2 = Display2 & Chr(Packet.Display2(8))
        Display2 = Display2 & Chr(Packet.Display2(9))
        Display2 = Display2 & Chr(Packet.Display2(10))
        Display2 = Display2 & Chr(Packet.Display2(11))
        Display2 = Display2 & Chr(Packet.Display2(12))
        Display2 = Display2 & Chr(Packet.Display2(13))
        Display2 = Display2 & Chr(Packet.Display2(14))
        Display2 = Display2 & Chr(Packet.Display2(15))
        lblDisplay2.Caption = Display2 'Muestra el display2
        
        'Indicador de marcha
        If Packet.Gear = 0 Then lblGear.Caption = Format("R")
        If Packet.Gear = 1 Then lblGear.Caption = Format("N")
        If Packet.Gear = 2 Then lblGear.Caption = 1
        If Packet.Gear = 3 Then lblGear.Caption = 2
        If Packet.Gear = 4 Then lblGear.Caption = 3
        If Packet.Gear = 5 Then lblGear.Caption = 4
        If Packet.Gear = 6 Then lblGear.Caption = 5
        If Packet.Gear = 7 Then lblGear.Caption = 6
        If Packet.Gear = 8 Then lblGear.Caption = 7
        If Packet.Gear = 9 Then lblGear.Caption = 8
     
        If (Packet.Flags And OG_SHIFTLIGHT) > 0 Then LEDShiftLigth.Visible = True
                                  
    End If
End Sub
Flags(0 To 1) As Integer
Flags As Integer

        'Traction Control
        Dim TractionControl As Byte        
        Select Case Packet.Flags And OG_TC
            Case 16
                TractionControl = True
            Case 0
                TractionControl = False
            End Select
          picTC.Visible = TractionControl
          
        'Headlights
        Dim HeadLights As Byte    
        Select Case Packet.Flags And OG_HEADLIGHTS
            Case 32
                HeadLights = True
            Case 0
                HeadLights = False
            End Select
          PicHEADLIGHTS.Visible = HeadLights
